title: Comments on Heidari et al.: association between serum vitamin D level and gonarthrosis.
authors.forename: Sarper
authors.initials: S
authors.lastname: Gursu
authors.forename: Timur
authors.initials: T
authors.lastname: Yildirim
mesh_terms: D006801:Humans; D007719:Knee Joint / Q000503:physiopathology; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology; D020370:Osteoarthritis, Knee / Q000097:blood* / Q000150:complications; D010146:Pain / Q000150:complications / Q000503:physiopathology; D057185:Sedentary Behavior; D014807:Vitamin D / Q000097:blood*; D014808:Vitamin D Deficiency / Q000097:blood* / Q000150:complications
chemical_list: D014807:Vitamin D